Tube Makers Marks -- I have observed LLH, SB&Co., and a D with a three-lobed crown over it on several American doubles -- Ansley H. Fox, Ithaca, Lefever, etc.
LLH is the mark of Lochet Habran of Jurille, Belgium.
Three-lobed crown over a D = Didiere barrel works of St Etienne, France.
The SB&Co. mark has a couple of explinations, and I don't know for sure which is correct. Walt Snyder in his Ithaca book said it was S. Buckley and Co. of the U.S. Other sources have reported Sanderson Bros. & Co., a Sheifield, England, company that set up a branch in Syracuse, New York. I have found Sanderson Bros. & Company ads in old Syracuse city directories. In John Houchin's article on L.C. Smith barrel steel he mentions that the Crucible Steel Co. purchased Sanderson Bros. in 1900. It makes sense that steel companies in Syracuse would be provinding tubes to the likes of L.C. Smith and Lefever Arms Co. of that area.
